Use the page name "contact" "about". Try it, and see if it works out for you. The options should be exactly whats called for in the nav block. Display pages "top" "second" , and under specific page should be page name. Best thing to do is try it, and see if its right.

Where did you find this code? I'd like to know all the options for hardcoding an autonav. One would naturally look at the auto-nav page in the documentation, of course, but I did that and saw no such information.